1. reproductive ADAPTATIONS
Notes #38
I can:
I dentify the adaptations that some animals use to survive

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9. insects

10. LIFE FUNCTIONS OF INSECTS
What is an insect?
Insects are animals that have a segmented body, a tough exoskeleton, and jointed appendages.
They typically have six legs a pair of antennae, and usually have wings!
Insects do NOT include spiders.

11. Sexual or asexual? Insects reproduce sexually
REPRODUCTION
Sexual or asexual? Insects reproduce sexually

12. Reproduction
Insects grow from an egg into an adult through the process known as metamorphosis.

13. Reproduction
Insects are fertilized internally and develop externally (they hatch from eggs)
External development makes the babies more likely to die, so their reproductive advantage is that they lay many, many eggs so the babies have a greater chance of survival

15. Mammals

16. Examples: Whales, giraffes, hamsters and even humans

17. What is a mammal?
Mammals are animals that have backbones and breast feed their young.
They are eukaryotic, and multicellular.

18. How do mammals feed their young?
think
How do mammals feed their young?
How do mammals reproduce?

19. Reproduction
All mammals reproduce sexually through internal fertilization with internal development

20. Their reproductive advantages are internal development, which allows the baby to be safe from harm until it’s born.
Placenta, or afterbirth, is a fluid that give the baby nutrients and cushions and protects the baby in the womb.

21. Dolphin Birth
Is learning how to swim a learned behavior or an innate behavior? Why?
How are dolphins and humans similar with how they reproduce?

22. Amphibians

23. What is an aAmphibiansmphibian?
Amphibians are animals that live near water.
They are vertebrates, which means they have a backbone.
Example: frogs

24. Reproduction
Amphibians reproduce sexually using external fertilization (outside the body)
Sperm from the males is transported to eggs through the water
Like insects, amphibian eggs are totally unprotected, so their reproductive advantage is that they lay many, many eggs so that at least some babies survive

25. Annelids

26. Annelid Worms

27. What are annelid worms?
Annelid worms are segmented worms: their bodies are divided into pieces
Examples: earthworms, leeches and marine worms
Annelid worms are invertebrates: they have no backbone

28. Reproduction Most annelids reproduce asexually (they divide in half)
Some reproduce sexually with external fertilization
Their reproductive adaptation is being able to reproduce without a partner

29. placenta; baby is safe internally
many eggs
internal
external
placenta; baby is safe internally
internal
internal
external
external
many eggs
external
external
without partner

30. How is sexual reproduction an advantage for terrestrial mammals. A
How is sexual reproduction an advantage for terrestrial mammals? A. The eggs are fertilized in water. B. The eggs are fertilized externally on land. C. The eggs are fertilized within the female’s body. D. The eggs are fertilized externally by multiple males.

32. Which organisms fertilize their offspring internally and develop externally?
A. mammals
B. insects
C. amphibians
D. annelids

33. Which is the only organism that fertilizes it’s offspring externally? A. mammals B. insects C. amphibians D. annelids

34. Which is the only organism that can sometimes reproduce asexually. A
Which is the only organism that can sometimes reproduce asexually? A. mammals B. insects C. amphibians D. annelids